Magnetic drying apparatus



Apr; 24, 1923.

W. D. PHILIPS MAGNETIC DRYING APPARATUS I Filed April 27, 1920 PatentedApr. 24, 1923.

UNITED STATES eann PATENT orrics.

WILLIAM D. rHiLIrs, or BROOKLYN, NEW YORK.

MAGNETIC DRYING APPARATUS.

Application filed April 27, 1920. Serial No. 377,133.

To all whom it may concern Be it known that I, WILLIAM D. PHILIPS, acitizen of the United States, and a resident of the borough of Brooklyn,county of v Kings, city and State of New York, have invented a new anduseful Improvement in Magnetic Drying Apparatus, of whichthe; followingis a full, clear, and exact descrip-.

tion.

My invention relates to improvements in that form of drying apparatuswhich is adapted for use in drying metal plates or the like, and it ismore particularlyadapted to drying plates which have been coated with avarnish or other materials, and which have to be dried and'handled with,care to avoid marring the coated surface. riers and driers of this kindit is necessary to hold the plates separated from each other andedgewise of the carrier, in order that the surface which has been coatedwith I W varnish, paint, or other material, may not be injured, and withthe ordinary apparatus 1 for doing this work it is very difficult tohold the plates in place. F urthermore, in

case of accidental displacement the plate is destroyed and other platesare likely to be injured and displaced. My invention re- 0 lates to animproved magnetic means which lends itself to simple and efiicientconstructi0n,and by which the individual plates are magnetically held inposition as they are carried through the drying oven, and automaticallyreleased from magnetic control in order that they may be convenientlydischarged. The particular form of carrier and of oven is not important,but itis necessary in carrying out my invention to have arms extendingat an angle to the carrier, agalnstwhlch arms the indlvidual plates he,and on which are magnetic means for holding the individual plates. Thiswill be I better understood from the description which follows.

Reference is tobe had to the fication, in which similar referencecharacters indicate corresponding parts in all the views.

Figure 1 is asectional elevation of a form of carrier and oven showing"my improve- ..;ments." v

' Figure 2 is a broken detail sectional plan of an end portion of thesame.

In caraccompany ing drawings forming a part of this spec1- 'or oven 12which can be heated in any preferredway, and'which can be of anyappropriate type without affecting the invention. "It will be understoodthat the drawings are more or less diagrammatic, and

are shown byway of example merely'to illustrate how my invention can becarried into practical use.

The carrier isprovided with arms 13 which can be made of sheet metal ifdesired,

and are spaced apart, extending as illustrated at right angles to thecarrier to which they are securely attached. These arms are adapted tocarry sheet metalplates 14 which have been coated and can be fed to thearms of the carrier in any suitable way, as for instance in the mannershownat the left hand'in Figure 1, where they are picked up successivelyby the arms as they pass from the under to the upper side of thecarrier. The arms can conveniently be provided with base flanges 15 tofacilitate their attachment to the carrier, and they are preferably atthe outer ends each provided with a lip 16 which overhangs the plate 14and assists in preventing its accidental displacement. There is spaceenough'between "the lips 16 and the inner ends of the arms to permit theplates 14 to lie easily and rather loosely so that the plates can beeasily fed to the arms, and the lips simply assistin retaining the metalplates so that they will not be so read 'ily shifted edgewise, ortwisted; edgewise.

In other words, the lips have a steadying effeet on the metal plates,but do not prevent them from being fed'readily onto the arms as shown atthe left in Figure 1, or from being discharged by gravity asshown at theright in Figure 1.

The plates 14 are adapted to rest against pole pieces 17 which are heldin each of the arms, three being shown (see Figure spaced apart, twonear the bottom and one near the top, but obviously there can be anydesired number of these. They project slightly from each face of thearm, and each arm has also a solenoid magnet 18 arranged therein, thecore 19 of which projects to about the same plane as the pole pieces 17so that when a plate 14 is in position leaning against the arm, it willcontact with the pole pieces 17 and core 19, and the current will passfrom the solenoid through the plate and pole pieces and thus hold theplate in place by magnet attraction.

The solenoid can be energized in any convenient way, but it should be byinterrupted means so that the arms 18 will not be magnetized at the timethe plates 14 are dis charged. As a convenient means of' energizing thesolenoid I have shown it connected by wires 20 with shoes 21 which canbe made flexible if desired, and which are attached to the flange 15 ofeach arm at opposite sides of the carrier. the shoes running on rails 22which extend along' thesides of the'carrier near the upper memberthereof, and these are arranged in an electric circuit including thebattery A and the wires a ergized as they assume an upright position, sothat they will mechanically hold the plates l i-in place, and as thecircuit is broken at the discharge end of the carrier, the plates can beeasily deposited. The arrangement torfeedmg orremoving the plates 18 not"materiahand I have shown them as being "discharged 'up'on" a conveyor'23 which will carry them o'ut'of the drier as fast as they aredeposited thereon. It will be seen that the rails'22 end near the pointof discharge so that the current through a particular solenoid'will becut off to permit the dropplates edgewise on the carrier, and forholdping of a plate.

As stated, the drawings are more or'less diz-lgrammatic, but they showthe essential thing which is the'arms for holding the ing' the platesmagnetically while they are being dried and until discharged. Obviouslythe'structure can be departed from widely without 'afiecting theinvention.

As illustrated it will be noticed that when a magnet 18 is energized.the current'will ed for use as a drier. but the conveyor or carrier withits magnetic attachments can be used generallvtor carryingmetal platesor the likein spaced relation.

I claim v p 1. A magnetic drying apparatus comprisjing tin-enclosingcasing. an endless carrier movable inthe casmg'and providedwithoutwardly projecting spaced arms each Thus it will be seen that as thecar- 'rier moves, the arms will be successively enadapted to carry aplate edgewise with relation to the carrier, means formagnetizing thearms so as to hold the platesagainst displacement, and means forsubstantially despacer l relation and edgewise on the carrier, andmagnetic means forpreventing the displacement of the plates.

A magnetic drying apparatus com prising an enclosed endless carrier,means for carrying metallic plates edgewise' in spaced relation withtheir inner edges next the carrier, and magnetic means for preventingthe displacement of the plates.

4. In a magnetic drying apparatus, a car rier, arms projecting from thecarrier,

meansforsteadyingmetal plates while held between and against the arms,and magneticmeans on the arms for'holding the several plates.

5. In a magnetic drying apparatus, acarrier having arms projectingtherefrom" at an angle to the carrier, means for steadying platesagainst the arms, and means for magnetizing the arms.

6. In a magnetic drying'apparatus. a carrier. metallic arms projectingfrom the carrier, m'eans for steadying' metallic plates while heldedgewise on the carrier and flat wise against the arms. and magneticmeans on the arm'sto prevent the displacement of the plates. 3

7. In a drier ot the kind described. acarrier. metallic arms projectingfrom, the car- .rier ati'an angle thereto, means tor"magnetizing thearms duringa portion of their travel; andmeans for steadying plateswhile held against the arms and 'edgewie to the carrier.

8. In a'drying apparatus a carrier. metallic arms projecting fromthecarrierat an angle thereto; a magnet on each arm. means for energizingthe maguet and means tor 'stea dving a plate against each arm.

9. In a drying apparatusfacarrier.metallic arms projecting from thecarrier at an angle thereto. each arm being provided with ajmagnet andwith spaced pole pieces against which'a metal plate may rest. and meansfor energizing the magnet.

10. In a. drying apparatus. a carrier. arms projecting from the carrier.the arms having flanges spaced apart from the carrier whereby a platecan be held against each arm and abut with the said flange. and meansfor magnetizing the several arms.

11. In adrying apparatus a carrier. arms projecting from the carrier.each arm being provided with pole pieces and a-"ina'gnet whereby theindividual plates to be dried may restag'a'inst the polepie'cesandmagnet, and means for energlzlng the magnets during a portion oftheir travel with the arms.

12. In a drying apparatus, a carrier, metallic arms projecting from thecarrier against which the plates to be dried may rest with their inneredges next to the carrier, electric conductors arranged parallel withthe carrier, and means for magnetizing the arms from the saidconductors.

13. In a drying apparatus, a carrier, metallic arms projecting from thecarrier, said arms being provided with magnets and pole pieces againstwhich the plates to be dried may rest with their inner edges next to thecarrier, conductor rails alongside the carrier, said rails beingincluded in an electric circuit, and shoes connected with the arms andadapted to contact with said rails.

14. The herein described means for conveying metal plates, comprising acarrier having arms projecting therefrom, means for steadying metalplates While held between and against the arms, means for magnetizingthe arms thereby holding the several plates in place, and means forsubstantially demagnetizing the arms at the time that the plates aredischarged.

WILLIAM n. PHILIPS.

